MHD mixed convective flow of Casson nanofluid over a slender rotating disk with source/sink and partial slip effects

The prominence of present work is to investigate the axisymmetric mixed convective magnetohydrodynamic (MHD) flow of a Casson nanofluid over a stretching variable thickened rotating disk in the presence of heat source/sink and velocity slip surface boundary condition. Besides, thermal buoyancy and viscous dissipation effects are examined. Convective heat and zero nanoparticles mass flux conditions at the boundaries of the disk are implemented. Von Karman similarity transformation is employed to formulate highly nonlinear coupled ordinary differential equations and solved via Optimal Homotopy Analysis Method (OHAM). The computed numerical values are presented graphically to predict the features of the embedded parameters. A new method (slope of the linear regression) is used to analyze the computed data of Skin friction coefficient, Nusselt number and Sherwood number. It is found that the power law exponent parameter plays a dominant role within the velocity, thermal and concentration boundary layer regions. Further, the fluid flow is opposed due to the magnetic field and velocity slip results in a reduced velocity boundary layer. © 2019 Trans Tech Publications, Switzerland